Lenz's law is used to determine the magnitude of emf induced in the coil.
A
True
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B
False
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Solution
The correct option is B False We can say that the magnitude of the emf induced in the circuit is proportional to the rate of change of flux. ϵ∝dϕdt Lenz's law states that when an emf is generated by a change in magnetic flux according to Faraday's Law, the polarity of the induced emf is such, that it produces a current whose magnetic field opposes the change which produces it. Therefore, Lenz's law can be used to determine the direction of emf induced in the coil but not its magnitude.